To function on their own, unicellular organisms must do what? make tissues perform a specialized task work with other cells do all jobs for survival no incorrect answers and answer quickly

Well you see unicellular organisms are very unique in the fact that they live all on their own and move around with a flagellum or little motor, but to the point unicellular organisms carry out essentially every function in life and they must in order to simply survive. So it's most likely D.

Your answer here is : Do all jobs for survival

hope this helps1